Portable machine fob



E. 0. BEARDSLEY AND W. F; PIPER.

PORTABH MACHINE FOR MAKING MOLDS.

APPLICATION FILED JAN. 31. I919.

Patented July 15,1919.

2 SHEETSSHEETI E. 0. BEARDSLEY AND W. F. PIPER.

PORTABLE MACHINE FOR MAKING MOLDS.

APPLICATION FILED JAN.31.1919.

Patented July 15, 1919.

2 SHEETS-SHEET 2.

mifigl mn I ELMER 0. BEABDSLEY, OF CHICAGO, AND WALTER F. PIPER, 01? OAKPARK, ILLINOIS.

PORTABLE MACHINE FOB. MAG HOLDS.

Specification of Letters Patent.

Application filed January 31, 1919. Serial No. 274,190.

.To all whom it may concern:-

' description.

The invention rel-ates to machines for making molds and moreparticularly to that type in which the machine is mounted on a truck totravel in a foundry along a sand pile'or to be brought into operativeposition with respect to different molds.

The object of the invention is to provide improved mechanism forcontrolling the movement of. the truck in combination with the mechanismfor filling the molds and the mechanism for supplying sand to saidmechanism.

The invention consists in the several novel features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a side elevation of a machine embodying theinvention. Fig. 2 is a horizontal section taken on line 22 of Fi 1. Fig.3 is a section taken on line 3-3 of Fig. 2. Fig. is a section taken online H of Fig. 2.

The machine is illustrated as mounted upon a truck comprising a suitableframe 15, side wheels 16 and a central wheel 17 whereby the frame issupported. Wheels 16 are loosely mounted on an axle 18 which isjournaled in bearings 18 in the frame 15, and this axle serves to drivethe sand conveyer and elevator. The truck wheels are ada ted to run onrails 16.

elicoidal sand cutters 23 are fixed to a. sleeve 24: on the axle 18 andare adapted to be driven by said shaft to cross convey sand from a pileor piles extending lengthwise of the truck formed by the rails to thesaid elevator. Breaker lugs 23' for disintegrating the sand are fixed onthe cutters 23. The mechanism for driving shaft 18 comprises a sprocket20 fixed to said shaft, a chain 21 for operating said sprocket, asprocket- Wheel 22 for driving said chain, a crossshaft 25 to whichsprocket 22 is fixed, a gear-wheel 26 fixed to shaft 25 and meshing witha pinion 27 which is fixed to the shaft (dook'and State of Illinois,

the motor and the rotor of t-.

of an electric-motor 19 which is mounted-on the truck frame. Shaft 25 ismounted in bearings 28 and 28' onsaid frame." Divergent blades 40,secured to the truck frame, are adapted to direct sand laterally. intothe path of the sand cutters and conveyors.

An elevator for lifting the sand and delivering it from thecross-conveyer into an elevated riddle 52 comprises a sprocket chain 41which passes around a sprocket 42 fixed on the central portions ofsleeve 24. and

around a sprocket 43 on a. shaft a5, and buckets 46 on said chain.Theshaft 4:5 is suitabl supported at the upper end of a mast 4 which issupported on the truckframe.

Mechanism for propelling the truck to keep the cutters and conveyers 23supplied with sand from the pile or to move it length wise of the truckfor any other purpose, comprises a drum 30 which is adapted to wind up acable 31 which has one of its ends suitably anchored to the wall or astake 31 in the foundry, so that as the cable is wound up on the drum,the truck will be forced forwardly toward the pile of sand. Themechanism for operating the drum to wind up the cable comprises a crankor wrist-pin 32 on the inner end of shaft 25 and adapted to operate apawl 33 which is adapted to engage a ratchet wheel 34 and operate itstep by step, a pinion 35 on a cross-shaft 36, to which the ratchetwheel 34 is secured, and a gear-wheel 37 connected to drive the drum 30.Shaft 36i's mounted. in bearings 38 on the truck-frame. A dog 39 engagesthe ratchet wheel 34 to prevent its reverse rotation.

The ramming head for projecting sand at a high velocity into a flask toform a mold is of the construction more fully illustrated and describedin an application filed by us of even date herewith, Serial No. 273,265,and in which there is a rotor with a blade for projecting the sandoperating in a casing which is supported by a yoke 61.. The constructionof this ramming head is fully set forth in said application andreference may be had thereto for a more detailed description thereof.The yoke 61, which supports the stator of the rannning head, issupported by a sleeve 62 which is fined to an electric motor 63. l Thesleeve 62 serves as an arm and a casing for the she.

head, as more fully setforth'in the a Patented July 15, 919.

said application. The arm 62 is pivotally sustained to swing laterallyin the outer end of a jib 64 which has its inner end pivotally sustainedon a standard 65 which is fixed on the truck. This constructionexemplifies a sand projector mounted on a portable truck which issupported thereon by pivotally-sustained members which permit theramming head tobe moved laterally to deliver sand into all portions ofthe flask.

The elevator buckets discharge the sand in a conveyer chute 66 whichcontains a riddle 52. This chute is supported by resilient bars 67 whichhave their upper ends fixed to said chute and the lower ends fixed to,the jib 64. The chute 66 discharges the sand into an inclined chute 68which is supported on and movable with arm 62 and has its lower endadapted to deliver sand into the ramming head. The conveyer chute 66 andriddle 52 are vibrated by a motor 69 which is supported 'onand movablewith the jib 64, a pinion 70 on the motor shaft, a gearwheel 71 suitablysupported on the jib and an eccentric-pin 72 operated by gears 71 and apitman 73 connected to the wrist-pin and to the chutes 66, as at 74.

In the operation of the portable machine, the cross-conveyer and cutters23 will feed sand to the central portion of the track where it will bepicked up by the elevator buckets 46 and delivered into the conveyerchute 66. From the latter, the sand will be delivered into the chute 68to supply the ramming head. Motor 19, through sprocket 22, serves todrive continuously the sand cutters and the sand elevator. In order toadvance the truck in the direction of the pile of sand, it will begradually advanced by the pawl and ratchet mechanism for operating thedrum 30 to wind up the cable 31. Whenever it should be desired tooperate the conveyer without advancing the truck, it is only necessaryto throw and hold the pawl 33 out of engagement with ratchet 34,whereupon the winding drum will be idle.

The invention exemplifies a portable molding machine in which themechanism for propelling the truck is simple in construction andeflicient in operation and in which simple driving mechanism is usedforoperating the cross-conveyer and elevator for the sand.

The invention is not to be understood as restricted to the details setforth, since these may be modified within the scope of the appendedclaims, without departing from the spirit and scope of the invention.

Having thus described the invention, what we claim as new and desire tosecure by Lettcrs Patent, is:

1.. In a machine for making molds, the combination of a portable truck,a sand-projector mounted on the truck, mechanism for driving theprojector, means mounted on the truck for delivering sand to theprojector, a cable, and means for winding the cable to propel the truck.

2. In a machine for making molds, the combination of a portable wheeledtruck, a sand projector movably mounted on the truck for delivering sandto the projector, an elevator for delivering sand to said deliverymeans, a cable, a drum, and means for. operating the drum and theelevator.

3. In a machine for making molds, the combination of a portable wheeledtruck, a sand projector movably mounted on the truck, mechanism fordriving the projector, means mounted on the truck forfldelivering sandto the projector, means for propelling the truck, and pawl-and-ratchetmechanism for operating said propelling means.

4. In a machine for making molds, the

combination of a portable Wheeled truck, a.

sand projector movably mounted on the truck, mechanism for driving theprojector, means mounted on the truck for delivering sand to theprojector, a cable, and av drum for propelling the truck, and pawl andratchet mechanism for operating said drum.

5. In a machine for making molds, the combination of a portable wheeledtruck, a device movably mounted on the truck for projecting sand into aflask, mechanism for driving the projector, means mounted on the truckfor delivering sand to the projector, means for propelling the truck,and mechanism comprising a pawl-and-ratchet for operating saidpropelling means, said pawl being shiftable to render it inoperative;

6. In a machine for making molds, the combination of a portable wheeledtruck, a device movably mounted on the truck for projecting sand into aflask, mechanism for driving the projector, means mounted on the truckfor delivering sand to the projector, means for propelling the truck, apawland-ratchet for operating said propelling means, and mechanismadapted to conjointly drive said delivery means and said propellingmeans, said pawl being shiftable to render the propelling meansinoperative.

7. In a machine for making molds, the

combination of a portable'wheeled truck, a

up the cable, and mechanism for con]ointl v operating the drum and thesand conveying and elevating-means.

9. In a machine for making molds, the combination of a portable wheeledtruck, a device movably mounted ,on the truck for projecting sand into aflask, mechanism for driving the projecting device, mechanism mounted onthe truck for elevating and feeding sandto the projector, means mountedon the truck for conveying sand to the elevating-means, a cable, a drumfor wind-,

ing up the cable, mechanism for conjointly operating the. dr11m-and thesand conveying jector,

and elevating means, and means to render the drum. inoperative by saidoperating;-

mechanism.

10. In amachine for making molds, the combination of a POItfiblB'WhBGlGdtruck, a sand projector movably mounted on the truck, mechanism fordriving the projector, an elevator mounted on the truck, means fordelivering sand from the elevator to the proveyin'g sand to theelevating means, a drum for winding up the cable, and mechanism for conjointly operating the drum and the sand conveying and elevating means.

ELMER O. BEARDSLEY: WALTER F. PIPER.

means mounted on the truck for con-, a cable,

